21371437751883 has 32 divisors (see below), whose sum is σ = 30473371031040. Its totient is φ = 13284083865600.

The previous prime is 21371437751819. The next prime is 21371437751891. The reversal of 21371437751883 is 38815773417312.

It is not a de Polignac number, because 21371437751883 - 2⁶ = 21371437751819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21371437751803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10153110 + ... + 12075947.

It is an arithmetic number, because the mean of its divisors is an integer number (952292844720).

Almost surely, 2^{21371437751883} is an apocalyptic number.

21371437751883 is a deficient number, since it is larger than the sum of its proper divisors (9101933279157).

21371437751883 is a wasteful number, since it uses less digits than its factorization.

21371437751883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22229347.

The product of its digits is 23708160, while the sum is 60.

The spelling of 21371437751883 in words is "twenty-one trillion, three hundred seventy-one billion, four hundred thirty-seven million, seven hundred fifty-one thousand, eight hundred eighty-three".