61545662136031 has 8 divisors (see below), whose sum is σ = 62980730318880. Its totient is φ = 60120735778272.

The previous prime is 61545662135933. The next prime is 61545662136067. The reversal of 61545662136031 is 13063126654516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61545662136031 - 2²³ = 61545653747423 is a prime.

It is a super-2 number, since 2×61545662136031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61545662166031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2535443995 + ... + 2535468268.

It is an arithmetic number, because the mean of its divisors is an integer number (7872591289860).

Almost surely, 2^{61545662136031} is an apocalyptic number.

61545662136031 is a deficient number, since it is larger than the sum of its proper divisors (1435068182849).

61545662136031 is a wasteful number, since it uses less digits than its factorization.

61545662136031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5070912545.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 61545662136031 in words is "sixty-one trillion, five hundred forty-five billion, six hundred sixty-two million, one hundred thirty-six thousand, thirty-one".