167620420770 has 32 divisors (see below), whose sum is σ = 438860738880. Its totient is φ = 40635253440.

The previous prime is 167620420769. The next prime is 167620420831. The reversal of 167620420770 is 77024026761.

It is a super-2 number, since 2×167620420770² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253970005 + ... + 253970664.

It is an arithmetic number, because the mean of its divisors is an integer number (13714398090).

Almost surely, 2^167620420770 is an apocalyptic number.

167620420770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

167620420770 is an abundant number, since it is smaller than the sum of its proper divisors (271240318110).

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

167620420770 is a wasteful number, since it uses less digits than its factorization.

167620420770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507940690.

The product of its (nonzero) digits is 197568, while the sum is 42.

The spelling of 167620420770 in words is "one hundred sixty-seven billion, six hundred twenty million, four hundred twenty thousand, seven hundred seventy".