151538081990 has 32 divisors (see below), whose sum is σ = 273792524544. Its totient is φ = 60387988960.

The previous prime is 151538081977. The next prime is 151538082023. The reversal of 151538081990 is 99180835151.

It is a congruent number.

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, 4100495 + ... + 4137285.

It is an arithmetic number, because the mean of its divisors is an integer number (8556016392).

Almost surely, 2^151538081990 is an apocalyptic number.

151538081990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

151538081990 is a deficient number, since it is larger than the sum of its proper divisors (122254442554).

151538081990 is a wasteful number, since it uses less digits than its factorization.

151538081990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38332.

The product of its (nonzero) digits is 388800, while the sum is 50.

The spelling of 151538081990 in words is "one hundred fifty-one billion, five hundred thirty-eight million, eighty-one thousand, nine hundred ninety".