61020022755 has 16 divisors (see below), whose sum is σ = 102770565120. Its totient is φ = 30831169248.

The previous prime is 61020022697. The next prime is 61020022781. The reversal of 61020022755 is 55722002016.

It is not a de Polignac number, because 61020022755 - 2⁷ = 61020022627 is a prime.

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, 107052387 + ... + 107052956.

It is an arithmetic number, because the mean of its divisors is an integer number (6423160320).

Almost surely, 2^61020022755 is an apocalyptic number.

61020022755 is a deficient number, since it is larger than the sum of its proper divisors (41750542365).

61020022755 is a wasteful number, since it uses less digits than its factorization.

61020022755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214105370.

The product of its (nonzero) digits is 8400, while the sum is 30.

The spelling of 61020022755 in words is "sixty-one billion, twenty million, twenty-two thousand, seven hundred fifty-five".