245199585991542 has 64 divisors (see below), whose sum is σ = 639072224146944. Its totient is φ = 60864021342720.

The previous prime is 245199585991537. The next prime is 245199585991571.

245199585991542 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (78).

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, 13208328684 + ... + 13208347247.

It is an arithmetic number, because the mean of its divisors is an integer number (9985503502296).

Almost surely, 2^{245199585991542} is an apocalyptic number.

245199585991542 is an abundant number, since it is smaller than the sum of its proper divisors (393872638155402).

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

245199585991542 is a wasteful number, since it uses less digits than its factorization.

245199585991542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26416675973.

The product of its digits is 2099520000, while the sum is 78.

The spelling of 245199585991542 in words is "two hundred forty-five trillion, one hundred ninety-nine billion, five hundred eighty-five million, nine hundred ninety-one thousand, five hundred forty-two".