151321720740 has 24 divisors (see below), whose sum is σ = 423700818240. Its totient is φ = 40352458848.

The previous prime is 151321720687. The next prime is 151321720763. The reversal of 151321720740 is 47027123151.

It is a super-2 number, since 2×151321720740² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1261014280 + ... + 1261014399.

It is an arithmetic number, because the mean of its divisors is an integer number (17654200760).

Almost surely, 2^151321720740 is an apocalyptic number.

151321720740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151321720740 is an abundant number, since it is smaller than the sum of its proper divisors (272379097500).

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

151321720740 is a wasteful number, since it uses less digits than its factorization.

151321720740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522028691 (or 2522028689 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

Adding to 151321720740 its reverse (47027123151), we get a palindrome (198348843891).

The spelling of 151321720740 in words is "one hundred fifty-one billion, three hundred twenty-one million, seven hundred twenty thousand, seven hundred forty".