61973430057 has 48 divisors (see below), whose sum is σ = 116458288128. Its totient is φ = 30794243040.

The previous prime is 61973430049. The next prime is 61973430059. The reversal of 61973430057 is 75003437916.

It is not a de Polignac number, because 61973430057 - 2³ = 61973430049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61973429994 and 61973430021.

It is not an unprimeable number, because it can be changed into a prime (61973430059) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1928143 + ... + 1960020.

It is an arithmetic number, because the mean of its divisors is an integer number (2426214336).

Almost surely, 2^61973430057 is an apocalyptic number.

It is an amenable number.

61973430057 is a deficient number, since it is larger than the sum of its proper divisors (54484858071).

61973430057 is a wasteful number, since it uses less digits than its factorization.

61973430057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888210 (or 3888207 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 45.

The spelling of 61973430057 in words is "sixty-one billion, nine hundred seventy-three million, four hundred thirty thousand, fifty-seven".