10040659690 has 12 divisors (see below), whose sum is σ = 18073757826. Its totient is φ = 4016137128.

The previous prime is 10040659661. The next prime is 10040659693. The reversal of 10040659690 is 9695604001.

It can be written as a sum of positive squares in only one way, i.e., 9036593721 + 1004065969 = 95061^2 + 31687^2 .

It is a super-2 number, since 2×10040659690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10040659693) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 301027 + ... + 332713.

Almost surely, 2^10040659690 is an apocalyptic number.

10040659690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10040659690 is a deficient number, since it is larger than the sum of its proper divisors (8033098136).

10040659690 is an frugal number, since it uses more digits than its factorization.

10040659690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63381 (or 31694 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

Multiplying 10040659690 by its sum of digits (40), we get a square (401626387600 = 633740²).

The spelling of 10040659690 in words is "ten billion, forty million, six hundred fifty-nine thousand, six hundred ninety".