61612530749 has 12 divisors (see below), whose sum is σ = 77397560352. Its totient is φ = 48009763560.

The previous prime is 61612530697. The next prime is 61612530751. The reversal of 61612530749 is 94703521616.

61612530749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61612530749 - 2¹² = 61612526653 is a prime.

It is a super-3 number, since 3×61612530749³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61612532749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36370187 + ... + 36371880.

It is an arithmetic number, because the mean of its divisors is an integer number (6449796696).

Almost surely, 2^61612530749 is an apocalyptic number.

It is an amenable number.

61612530749 is a deficient number, since it is larger than the sum of its proper divisors (15785029603).

61612530749 is a wasteful number, since it uses less digits than its factorization.

61612530749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72742096 (or 72742085 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 61612530749 in words is "sixty-one billion, six hundred twelve million, five hundred thirty thousand, seven hundred forty-nine".