245942371854 has 24 divisors (see below), whose sum is σ = 538048688112. Its totient is φ = 81184860000.

The previous prime is 245942371819. The next prime is 245942371867. The reversal of 245942371854 is 458173249542.

It is a happy number.

245942371854 is a `hidden beast` number, since 2 + 4 + 594 + 2 + 37 + 18 + 5 + 4 = 666.

It is a super-2 number, since 2×245942371854² (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 245942371854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66325647 + ... + 66329354.

It is an arithmetic number, because the mean of its divisors is an integer number (22418695338).

Almost surely, 2^245942371854 is an apocalyptic number.

245942371854 is an abundant number, since it is smaller than the sum of its proper divisors (292106316258).

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

245942371854 is a wasteful number, since it uses less digits than its factorization.

245942371854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132655112 (or 132655109 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

It can be divided in two parts, 245942 and 371854, that added together give a square (617796 = 786²).

The spelling of 245942371854 in words is "two hundred forty-five billion, nine hundred forty-two million, three hundred seventy-one thousand, eight hundred fifty-four".