157890143972 has 24 divisors (see below), whose sum is σ = 301445468352. Its totient is φ = 71763764000.

The previous prime is 157890143969. The next prime is 157890143977. The reversal of 157890143972 is 279341098751.

157890143972 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (157890143977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 660038 + ... + 866850.

It is an arithmetic number, because the mean of its divisors is an integer number (12560227848).

Almost surely, 2^157890143972 is an apocalyptic number.

It is an amenable number.

157890143972 is a deficient number, since it is larger than the sum of its proper divisors (143555324380).

157890143972 is a wasteful number, since it uses less digits than its factorization.

157890143972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224179 (or 224177 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 56.

The spelling of 157890143972 in words is "one hundred fifty-seven billion, eight hundred ninety million, one hundred forty-three thousand, nine hundred seventy-two".