61975894027 has 4 divisors (see below), whose sum is σ = 62577601840. Its totient is φ = 61374186216.

The previous prime is 61975893943. The next prime is 61975894033. The reversal of 61975894027 is 72049857916.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61975894027 - 2⁷ = 61975893899 is a prime.

It is a super-2 number, since 2×61975894027² (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 (61975894037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300853752 + ... + 300853957.

It is an arithmetic number, because the mean of its divisors is an integer number (15644400460).

Almost surely, 2^61975894027 is an apocalyptic number.

61975894027 is a deficient number, since it is larger than the sum of its proper divisors (601707813).

61975894027 is a wasteful number, since it uses less digits than its factorization.

61975894027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601707812.

The product of its (nonzero) digits is 7620480, while the sum is 58.

The spelling of 61975894027 in words is "sixty-one billion, nine hundred seventy-five million, eight hundred ninety-four thousand, twenty-seven".