157990257190 has 16 divisors (see below), whose sum is σ = 288387851040. Its totient is φ = 62306016640.

The previous prime is 157990257157. The next prime is 157990257203. The reversal of 157990257190 is 91752099751.

It is a happy number.

It is a super-2 number, since 2×157990257190² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111260035 + ... + 111261454.

It is an arithmetic number, because the mean of its divisors is an integer number (18024240690).

Almost surely, 2^157990257190 is an apocalyptic number.

157990257190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157990257190 is a deficient number, since it is larger than the sum of its proper divisors (130397593850).

157990257190 is a wasteful number, since it uses less digits than its factorization.

157990257190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222521567.

The product of its (nonzero) digits is 1786050, while the sum is 55.

The spelling of 157990257190 in words is "one hundred fifty-seven billion, nine hundred ninety million, two hundred fifty-seven thousand, one hundred ninety".