20374164387 has 16 divisors (see below), whose sum is σ = 30248599680. Its totient is φ = 13553682696.

The previous prime is 20374164383. The next prime is 20374164407. The reversal of 20374164387 is 78346147302.

20374164387 is a `hidden beast` number, since 203 + 7 + 4 + 1 + 6 + 438 + 7 = 666.

It is not a de Polignac number, because 20374164387 - 2² = 20374164383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20374164383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 795313 + ... + 820530.

It is an arithmetic number, because the mean of its divisors is an integer number (1890537480).

Almost surely, 2^20374164387 is an apocalyptic number.

20374164387 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20374164387 is a deficient number, since it is larger than the sum of its proper divisors (9874435293).

20374164387 is a wasteful number, since it uses less digits than its factorization.

20374164387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616319 (or 1616313 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 20374164387 in words is "twenty billion, three hundred seventy-four million, one hundred sixty-four thousand, three hundred eighty-seven".