20375556974 has 4 divisors (see below), whose sum is σ = 30563335464. Its totient is φ = 10187778486.

The previous prime is 20375556959. The next prime is 20375556989. The reversal of 20375556974 is 47965557302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20375556959) and next prime (20375556989).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5093889242 + ... + 5093889245.

It is an arithmetic number, because the mean of its divisors is an integer number (7640833866).

Almost surely, 2^20375556974 is an apocalyptic number.

20375556974 is a deficient number, since it is larger than the sum of its proper divisors (10187778490).

20375556974 is a wasteful number, since it uses less digits than its factorization.

20375556974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10187778489.

The product of its (nonzero) digits is 7938000, while the sum is 53.

The spelling of 20375556974 in words is "twenty billion, three hundred seventy-five million, five hundred fifty-six thousand, nine hundred seventy-four".