746636786624642 has 4 divisors (see below), whose sum is σ = 1119955179936966. Its totient is φ = 373318393312320.

The previous prime is 746636786624633. The next prime is 746636786624681. The reversal of 746636786624642 is 246426687636647.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 695382226750201 + 51254559874441 = 26370101^2 + 7159229^2 .

It is a super-2 number, since 2×746636786624642² (a number of 31 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186659196656159 + ... + 186659196656162.

Almost surely, 2^{746636786624642} is an apocalyptic number.

746636786624642 is a deficient number, since it is larger than the sum of its proper divisors (373318393312324).

746636786624642 is a wasteful number, since it uses less digits than its factorization.

746636786624642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373318393312323.

The product of its digits is 14046068736, while the sum is 77.

The spelling of 746636786624642 in words is "seven hundred forty-six trillion, six hundred thirty-six billion, seven hundred eighty-six million, six hundred twenty-four thousand, six hundred forty-two".