245638836542 has 64 divisors (see below), whose sum is σ = 448964156160. Its totient is φ = 99340761600.

The previous prime is 245638836511. The next prime is 245638836551.

245638836542 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×245638836542³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3281492 + ... + 3355512.

It is an arithmetic number, because the mean of its divisors is an integer number (7015064940).

Almost surely, 2^245638836542 is an apocalyptic number.

245638836542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

245638836542 is a deficient number, since it is larger than the sum of its proper divisors (203325319618).

245638836542 is a wasteful number, since it uses less digits than its factorization.

245638836542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74537.

The product of its digits is 33177600, while the sum is 56.

The spelling of 245638836542 in words is "two hundred forty-five billion, six hundred thirty-eight million, eight hundred thirty-six thousand, five hundred forty-two".