61253572057 has 8 divisors (see below), whose sum is σ = 62605412352. Its totient is φ = 59915318400.

The previous prime is 61253572027. The next prime is 61253572091. The reversal of 61253572057 is 75027535216.

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 61253572057 - 2¹⁵ = 61253539289 is a prime.

It is a super-2 number, since 2×61253572057² (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 (61253572007) 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, 3387544 + ... + 3405577.

It is an arithmetic number, because the mean of its divisors is an integer number (7825676544).

Almost surely, 2^61253572057 is an apocalyptic number.

It is an amenable number.

61253572057 is a deficient number, since it is larger than the sum of its proper divisors (1351840295).

61253572057 is a wasteful number, since it uses less digits than its factorization.

61253572057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6793319.

The product of its (nonzero) digits is 441000, while the sum is 43.

The spelling of 61253572057 in words is "sixty-one billion, two hundred fifty-three million, five hundred seventy-two thousand, fifty-seven".