857740800537644 has 12 divisors (see below), whose sum is σ = 1580048843095800. Its totient is φ = 406298273938848.

The previous prime is 857740800537631. The next prime is 857740800537659. The reversal of 857740800537644 is 446735008047758.

It is a super-2 number, since 2×857740800537644² (a number of 31 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5643031582409 + ... + 5643031582560.

It is an arithmetic number, because the mean of its divisors is an integer number (131670736924650).

Almost surely, 2^{857740800537644} is an apocalyptic number.

It is an amenable number.

857740800537644 is a deficient number, since it is larger than the sum of its proper divisors (722308042558156).

857740800537644 is a wasteful number, since it uses less digits than its factorization.

857740800537644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11286063164992 (or 11286063164990 counting only the distinct ones).

The product of its (nonzero) digits is 632217600, while the sum is 68.

The spelling of 857740800537644 in words is "eight hundred fifty-seven trillion, seven hundred forty billion, eight hundred million, five hundred thirty-seven thousand, six hundred forty-four".