661202431514 has 32 divisors (see below), whose sum is σ = 1028398305792. Its totient is φ = 318499776000.

The previous prime is 661202431489. The next prime is 661202431523. The reversal of 661202431514 is 415134202166.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58731374 + ... + 58742630.

It is an arithmetic number, because the mean of its divisors is an integer number (32137447056).

Almost surely, 2^661202431514 is an apocalyptic number.

661202431514 is a deficient number, since it is larger than the sum of its proper divisors (367195874278).

661202431514 is a wasteful number, since it uses less digits than its factorization.

661202431514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15462.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 661202431514 in words is "six hundred sixty-one billion, two hundred two million, four hundred thirty-one thousand, five hundred fourteen".