157285859421 has 16 divisors (see below), whose sum is σ = 220877673984. Its totient is φ = 99360857904.

The previous prime is 157285859411. The next prime is 157285859453. The reversal of 157285859421 is 124958582751.

It is not a de Polignac number, because 157285859421 - 2⁷ = 157285859293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157285859411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10644511 + ... + 10659276.

It is an arithmetic number, because the mean of its divisors is an integer number (13804854624).

Almost surely, 2^157285859421 is an apocalyptic number.

It is an amenable number.

157285859421 is a deficient number, since it is larger than the sum of its proper divisors (63591814563).

157285859421 is a wasteful number, since it uses less digits than its factorization.

157285859421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21303920.

The product of its digits is 8064000, while the sum is 57.

The spelling of 157285859421 in words is "one hundred fifty-seven billion, two hundred eighty-five million, eight hundred fifty-nine thousand, four hundred twenty-one".