761651287489 has 4 divisors (see below), whose sum is σ = 761660643460. Its totient is φ = 761641931520.

The previous prime is 761651287469. The next prime is 761651287499. The reversal of 761651287489 is 984782156167.

761651287489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 984782156167 = 757 ⋅1300901131.

It can be written as a sum of positive squares in 2 ways, for example, as 138235240000 + 623416047489 = 371800^2 + 789567^2 .

It is a cyclic number.

It is not a de Polignac number, because 761651287489 - 2⁵ = 761651287457 is a prime.

It is a super-3 number, since 3×761651287489³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 761651287489.

It is not an unprimeable number, because it can be changed into a prime (761651287409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4554792 + ... + 4719049.

It is an arithmetic number, because the mean of its divisors is an integer number (190415160865).

Almost surely, 2^761651287489 is an apocalyptic number.

It is an amenable number.

761651287489 is a deficient number, since it is larger than the sum of its proper divisors (9355971).

761651287489 is an equidigital number, since it uses as much as digits as its factorization.

761651287489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9355970.

The product of its digits is 40642560, while the sum is 64.

The spelling of 761651287489 in words is "seven hundred sixty-one billion, six hundred fifty-one million, two hundred eighty-seven thousand, four hundred eighty-nine".