61270391991426 has 32 divisors (see below), whose sum is σ = 129833154557568. Its totient is φ = 19209626108160.

The previous prime is 61270391991349. The next prime is 61270391991437. The reversal of 61270391991426 is 62419919307216.

It is a self number, because there is not a number n which added to its sum of digits gives 61270391991426.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194492685 + ... + 194807456.

It is an arithmetic number, because the mean of its divisors is an integer number (4057286079924).

Almost surely, 2^{61270391991426} is an apocalyptic number.

61270391991426 is an abundant number, since it is smaller than the sum of its proper divisors (68562762566142).

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

61270391991426 is a wasteful number, since it uses less digits than its factorization.

61270391991426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389301706.

The product of its (nonzero) digits is 8817984, while the sum is 60.

The spelling of 61270391991426 in words is "sixty-one trillion, two hundred seventy billion, three hundred ninety-one million, nine hundred ninety-one thousand, four hundred twenty-six".