2587007978198 has 128 divisors (see below), whose sum is σ = 5141632204800. Its totient is φ = 949206988800.

The previous prime is 2587007978183. The next prime is 2587007978237. The reversal of 2587007978198 is 8918797007852.

It is a super-2 number, since 2×2587007978198² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23681483 + ... + 23790473.

It is an arithmetic number, because the mean of its divisors is an integer number (40169001600).

Almost surely, 2^{2587007978198} is an apocalyptic number.

2587007978198 is a deficient number, since it is larger than the sum of its proper divisors (2554624226602).

2587007978198 is a wasteful number, since it uses less digits than its factorization.

2587007978198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109246.

The product of its (nonzero) digits is 142248960, while the sum is 71.

The spelling of 2587007978198 in words is "two trillion, five hundred eighty-seven billion, seven million, nine hundred seventy-eight thousand, one hundred ninety-eight".