21880770495974 has 64 divisors (see below), whose sum is σ = 37689959301120. Its totient is φ = 9437542156800.

The previous prime is 21880770495971. The next prime is 21880770495977. The reversal of 21880770495974 is 47959407708812.

It is an interprime number because it is at equal distance from previous prime (21880770495971) and next prime (21880770495977).

It is a junction number, because it is equal to n+sod(n) for n = 21880770495898 and 21880770495907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21880770495971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149362127 + ... + 149508549.

It is an arithmetic number, because the mean of its divisors is an integer number (588905614080).

Almost surely, 2^{21880770495974} is an apocalyptic number.

21880770495974 is a deficient number, since it is larger than the sum of its proper divisors (15809188805146).

21880770495974 is a wasteful number, since it uses less digits than its factorization.

21880770495974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148845.

The product of its (nonzero) digits is 284497920, while the sum is 71.

The spelling of 21880770495974 in words is "twenty-one trillion, eight hundred eighty billion, seven hundred seventy million, four hundred ninety-five thousand, nine hundred seventy-four".