20170055372 has 6 divisors (see below), whose sum is σ = 35297596908. Its totient is φ = 10085027684.

The previous prime is 20170055369. The next prime is 20170055429. The reversal of 20170055372 is 27355007102.

It is a super-2 number, since 2×20170055372² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2521256918 + ... + 2521256925.

It is an arithmetic number, because the mean of its divisors is an integer number (5882932818).

Almost surely, 2^20170055372 is an apocalyptic number.

It is an amenable number.

20170055372 is a deficient number, since it is larger than the sum of its proper divisors (15127541536).

20170055372 is a wasteful number, since it uses less digits than its factorization.

20170055372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042513847 (or 5042513845 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 32.

The spelling of 20170055372 in words is "twenty billion, one hundred seventy million, fifty-five thousand, three hundred seventy-two".