251341620380 has 12 divisors (see below), whose sum is σ = 527817402840. Its totient is φ = 100536648144.

The previous prime is 251341620377. The next prime is 251341620389. The reversal of 251341620380 is 83026143152.

It is a super-2 number, since 2×251341620380² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 251341620380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251341620389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6283540490 + ... + 6283540529.

It is an arithmetic number, because the mean of its divisors is an integer number (43984783570).

Almost surely, 2^251341620380 is an apocalyptic number.

251341620380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251341620380 is an abundant number, since it is smaller than the sum of its proper divisors (276475782460).

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

251341620380 is a wasteful number, since it uses less digits than its factorization.

251341620380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12567081028 (or 12567081026 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 251341620380 in words is "two hundred fifty-one billion, three hundred forty-one million, six hundred twenty thousand, three hundred eighty".