151221374140 has 12 divisors (see below), whose sum is σ = 317564885736. Its totient is φ = 60488549648.

The previous prime is 151221374131. The next prime is 151221374191. The reversal of 151221374140 is 41473122151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3780534334 + ... + 3780534373.

It is an arithmetic number, because the mean of its divisors is an integer number (26463740478).

Almost surely, 2^151221374140 is an apocalyptic number.

151221374140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151221374140 is an abundant number, since it is smaller than the sum of its proper divisors (166343511596).

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

151221374140 is a wasteful number, since it uses less digits than its factorization.

151221374140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7561068716 (or 7561068714 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 151221374140 its reverse (41473122151), we get a palindrome (192694496291).

The spelling of 151221374140 in words is "one hundred fifty-one billion, two hundred twenty-one million, three hundred seventy-four thousand, one hundred forty".