61955955426 has 16 divisors (see below), whose sum is σ = 124132009824. Its totient is φ = 20615301984.

The previous prime is 61955955367. The next prime is 61955955437. The reversal of 61955955426 is 62455955916.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9167131 + ... + 9173886.

It is an arithmetic number, because the mean of its divisors is an integer number (7758250614).

Almost surely, 2^61955955426 is an apocalyptic number.

61955955426 is an abundant number, since it is smaller than the sum of its proper divisors (62176054398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61955955426 is a wasteful number, since it uses less digits than its factorization.

61955955426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18341585.

The product of its digits is 14580000, while the sum is 57.

The spelling of 61955955426 in words is "sixty-one billion, nine hundred fifty-five million, nine hundred fifty-five thousand, four hundred twenty-six".