2661250860398 has 16 divisors (see below), whose sum is σ = 4321451264256. Its totient is φ = 1221838894560.

The previous prime is 2661250860337. The next prime is 2661250860413. The reversal of 2661250860398 is 8930680521662.

It is a super-2 number, since 2×2661250860398² (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 7 ways as a sum of consecutive naturals, for example, 267942161 + ... + 267952092.

It is an arithmetic number, because the mean of its divisors is an integer number (270090704016).

Almost surely, 2^{2661250860398} is an apocalyptic number.

2661250860398 is a deficient number, since it is larger than the sum of its proper divisors (1660200403858).

2661250860398 is a wasteful number, since it uses less digits than its factorization.

2661250860398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535894459.

The product of its (nonzero) digits is 7464960, while the sum is 56.

The spelling of 2661250860398 in words is "two trillion, six hundred sixty-one billion, two hundred fifty million, eight hundred sixty thousand, three hundred ninety-eight".