251355111551342 has 48 divisors (see below), whose sum is σ = 399146177126400. Its totient is φ = 118589472100800.

The previous prime is 251355111551273. The next prime is 251355111551347. The reversal of 251355111551342 is 243155111553152.

251355111551342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 251355111551293 and 251355111551302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251355111551347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182640959 + ... + 184012037.

It is an arithmetic number, because the mean of its divisors is an integer number (8315545356800).

Almost surely, 2^{251355111551342} is an apocalyptic number.

251355111551342 is a deficient number, since it is larger than the sum of its proper divisors (147791065575058).

251355111551342 is a wasteful number, since it uses less digits than its factorization.

251355111551342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372953 (or 1372912 counting only the distinct ones).

The product of its digits is 450000, while the sum is 44.

The spelling of 251355111551342 in words is "two hundred fifty-one trillion, three hundred fifty-five billion, one hundred eleven million, five hundred fifty-one thousand, three hundred forty-two".