151015402421 has 8 divisors (see below), whose sum is σ = 162639531264. Its totient is φ = 139392353520.

The previous prime is 151015402397. The next prime is 151015402457. The reversal of 151015402421 is 124204510151.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 151015402421 - 2²⁶ = 150948293557 is a prime.

It is a super-2 number, since 2×151015402421² (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 (151015402921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33056 + ... + 550566.

It is an arithmetic number, because the mean of its divisors is an integer number (20329941408).

Almost surely, 2^151015402421 is an apocalyptic number.

It is an amenable number.

151015402421 is a deficient number, since it is larger than the sum of its proper divisors (11624128843).

151015402421 is a wasteful number, since it uses less digits than its factorization.

151015402421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539971.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 151015402421 its reverse (124204510151), we get a palindrome (275219912572).

The spelling of 151015402421 in words is "one hundred fifty-one billion, fifteen million, four hundred two thousand, four hundred twenty-one".