61263770488 has 8 divisors (see below), whose sum is σ = 114869569680. Its totient is φ = 30631885240.

The previous prime is 61263770473. The next prime is 61263770537. The reversal of 61263770488 is 88407736216.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×61263770488³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3828985648 + ... + 3828985663.

It is an arithmetic number, because the mean of its divisors is an integer number (14358696210).

Almost surely, 2^61263770488 is an apocalyptic number.

It is an amenable number.

61263770488 is a deficient number, since it is larger than the sum of its proper divisors (53605799192).

61263770488 is a wasteful number, since it uses less digits than its factorization.

61263770488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7657971317 (or 7657971313 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 61263770488 in words is "sixty-one billion, two hundred sixty-three million, seven hundred seventy thousand, four hundred eighty-eight".