61653445107051 has 32 divisors (see below), whose sum is σ = 98894823206400. Its totient is φ = 33375599389440.

The previous prime is 61653445107031. The next prime is 61653445107119. The reversal of 61653445107051 is 15070154435616.

It is a de Polignac number, because none of the positive numbers 2^k-61653445107051 is a prime.

It is a super-2 number, since 2×61653445107051² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61653445107031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17663905 + ... + 20864333.

It is an arithmetic number, because the mean of its divisors is an integer number (3090463225200).

Almost surely, 2^{61653445107051} is an apocalyptic number.

61653445107051 is a deficient number, since it is larger than the sum of its proper divisors (37241378099349).

61653445107051 is a wasteful number, since it uses less digits than its factorization.

61653445107051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248739.

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 61653445107051 in words is "sixty-one trillion, six hundred fifty-three billion, four hundred forty-five million, one hundred seven thousand, fifty-one".