61020022765 has 32 divisors (see below), whose sum is σ = 79299634176. Its totient is φ = 44808491520.

The previous prime is 61020022697. The next prime is 61020022781. The reversal of 61020022765 is 56722002016.

It is not a de Polignac number, because 61020022765 - 2¹⁵ = 61019989997 is a prime.

It is a super-2 number, since 2×61020022765² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9580612 + ... + 9586978.

It is an arithmetic number, because the mean of its divisors is an integer number (2478113568).

Almost surely, 2^61020022765 is an apocalyptic number.

61020022765 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61020022765 is a deficient number, since it is larger than the sum of its proper divisors (18279611411).

61020022765 is a wasteful number, since it uses less digits than its factorization.

61020022765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7189.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 61020022765 in words is "sixty-one billion, twenty million, twenty-two thousand, seven hundred sixty-five".