151621401203220 has 48 divisors (see below), whose sum is σ = 457196840553600. Its totient is φ = 37322191065216.

The previous prime is 151621401203191. The next prime is 151621401203263. The reversal of 151621401203220 is 22302104126151.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97193205120 + ... + 97193206679.

It is an arithmetic number, because the mean of its divisors is an integer number (9524934178200).

Almost surely, 2^{151621401203220} is an apocalyptic number.

151621401203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151621401203220 is an abundant number, since it is smaller than the sum of its proper divisors (305575439350380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151621401203220 is a wasteful number, since it uses less digits than its factorization.

151621401203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194386411824 (or 194386411822 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 151621401203220 its reverse (22302104126151), we get a palindrome (173923505329371).

The spelling of 151621401203220 in words is "one hundred fifty-one trillion, six hundred twenty-one billion, four hundred one million, two hundred three thousand, two hundred twenty".