1660715240764 has 24 divisors (see below), whose sum is σ = 3036936678048. Its totient is φ = 793122052800.

The previous prime is 1660715240761. The next prime is 1660715240783. The reversal of 1660715240764 is 4670425170661.

It is a super-2 number, since 2×1660715240764² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660715240761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12810867 + ... + 12939850.

It is an arithmetic number, because the mean of its divisors is an integer number (126539028252).

Almost surely, 2^{1660715240764} is an apocalyptic number.

It is an amenable number.

1660715240764 is a deficient number, since it is larger than the sum of its proper divisors (1376221437284).

1660715240764 is a wasteful number, since it uses less digits than its factorization.

1660715240764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25751445 (or 25751443 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 1660715240764 in words is "one trillion, six hundred sixty billion, seven hundred fifteen million, two hundred forty thousand, seven hundred sixty-four".