20756001894 has 16 divisors (see below), whose sum is σ = 41513472000. Its totient is φ = 6918422600.

The previous prime is 20756001859. The next prime is 20756001949. The reversal of 20756001894 is 49810065702.

It is a super-2 number, since 2×20756001894² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227107 + ... + 305105.

It is an arithmetic number, because the mean of its divisors is an integer number (2594592000).

Almost surely, 2^20756001894 is an apocalyptic number.

20756001894 is an abundant number, since it is smaller than the sum of its proper divisors (20757470106).

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

20756001894 is a wasteful number, since it uses less digits than its factorization.

20756001894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122355.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 20756001894 in words is "twenty billion, seven hundred fifty-six million, one thousand, eight hundred ninety-four".