167720888431020 has 96 divisors (see below), whose sum is σ = 494354761689600. Its totient is φ = 42369920446464.

The previous prime is 167720888430923. The next prime is 167720888431027. The reversal of 167720888431020 is 20134888027761.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (167720888431027) 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, 26118796 + ... + 31900364.

It is an arithmetic number, because the mean of its divisors is an integer number (5149528767600).

Almost surely, 2^{167720888431020} is an apocalyptic number.

167720888431020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

167720888431020 is an abundant number, since it is smaller than the sum of its proper divisors (326633873258580).

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

167720888431020 is a wasteful number, since it uses less digits than its factorization.

167720888431020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5807047 (or 5807045 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 57.

The spelling of 167720888431020 in words is "one hundred sixty-seven trillion, seven hundred twenty billion, eight hundred eighty-eight million, four hundred thirty-one thousand, twenty".