61523253601 has 16 divisors (see below), whose sum is σ = 66355833600. Its totient is φ = 56850768000.

The previous prime is 61523253599. The next prime is 61523253637. The reversal of 61523253601 is 10635232516.

It is a cyclic number.

It is not a de Polignac number, because 61523253601 - 2¹ = 61523253599 is a prime.

It is a super-2 number, since 2×61523253601² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61523253101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6436776 + ... + 6446326.

It is an arithmetic number, because the mean of its divisors is an integer number (4147239600).

Almost surely, 2^61523253601 is an apocalyptic number.

It is an amenable number.

61523253601 is a deficient number, since it is larger than the sum of its proper divisors (4832579999).

61523253601 is a wasteful number, since it uses less digits than its factorization.

61523253601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17880.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 61523253601 in words is "sixty-one billion, five hundred twenty-three million, two hundred fifty-three thousand, six hundred one".