61542900802929 has 64 divisors (see below), whose sum is σ = 101138046266880. Its totient is φ = 32415753830400.

The previous prime is 61542900802907. The next prime is 61542900802993. The reversal of 61542900802929 is 92920800924516.

It is a happy number.

It is not a de Polignac number, because 61542900802929 - 2²⁸ = 61542632367473 is a prime.

It is a super-3 number, since 3×61542900802929³ (a number of 42 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61542900806929) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 556345177 + ... + 556455785.

It is an arithmetic number, because the mean of its divisors is an integer number (1580281972920).

Almost surely, 2^{61542900802929} is an apocalyptic number.

It is an amenable number.

61542900802929 is a deficient number, since it is larger than the sum of its proper divisors (39595145463951).

61542900802929 is a wasteful number, since it uses less digits than its factorization.

61542900802929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113530.

The product of its (nonzero) digits is 5598720, while the sum is 57.

The spelling of 61542900802929 in words is "sixty-one trillion, five hundred forty-two billion, nine hundred million, eight hundred two thousand, nine hundred twenty-nine".