157465381421 has 4 divisors (see below), whose sum is σ = 157681978272. Its totient is φ = 157248784572.

The previous prime is 157465381399. The next prime is 157465381481. The reversal of 157465381421 is 124183564751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 157465381421 - 2⁶ = 157465381357 is a prime.

It is a super-2 number, since 2×157465381421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157465381481) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 108297335 + ... + 108298788.

It is an arithmetic number, because the mean of its divisors is an integer number (39420494568).

Almost surely, 2^157465381421 is an apocalyptic number.

It is an amenable number.

157465381421 is a deficient number, since it is larger than the sum of its proper divisors (216596851).

157465381421 is an equidigital number, since it uses as much as digits as its factorization.

157465381421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216596850.

The product of its digits is 806400, while the sum is 47.

The spelling of 157465381421 in words is "one hundred fifty-seven billion, four hundred sixty-five million, three hundred eighty-one thousand, four hundred twenty-one".