61427398923 has 64 divisors (see below), whose sum is σ = 101995407360. Its totient is φ = 36216180000.

The previous prime is 61427398909. The next prime is 61427398933. The reversal of 61427398923 is 32989372416.

It is not a de Polignac number, because 61427398923 - 2⁶ = 61427398859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61427398923.

It is not an unprimeable number, because it can be changed into a prime (61427398933) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3195940 + ... + 3215102.

It is an arithmetic number, because the mean of its divisors is an integer number (1593678240).

Almost surely, 2^61427398923 is an apocalyptic number.

61427398923 is a deficient number, since it is larger than the sum of its proper divisors (40568008437).

61427398923 is a wasteful number, since it uses less digits than its factorization.

61427398923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19477 (or 19471 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 61427398923 in words is "sixty-one billion, four hundred twenty-seven million, three hundred ninety-eight thousand, nine hundred twenty-three".