40136649510 has 64 divisors (see below), whose sum is σ = 97509795840. Its totient is φ = 10572038400.

The previous prime is 40136649481. The next prime is 40136649517. The reversal of 40136649510 is 1594663104.

It is a super-2 number, since 2×40136649510² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40136649517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2799019 + ... + 2813321.

It is an arithmetic number, because the mean of its divisors is an integer number (1523590560).

Almost surely, 2^40136649510 is an apocalyptic number.

40136649510 is an abundant number, since it is smaller than the sum of its proper divisors (57373146330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40136649510 is a wasteful number, since it uses less digits than its factorization.

40136649510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15453.

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 40136649510 in words is "forty billion, one hundred thirty-six million, six hundred forty-nine thousand, five hundred ten".