40698612864 has 1024 divisors, whose sum is σ = 159936000000. Its totient is φ = 10095611904.

The previous prime is 40698612859. The next prime is 40698612881. The reversal of 40698612864 is 46821689604.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 40698612864.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 292795707 + ... + 292795845.

It is an arithmetic number, because the mean of its divisors is an integer number (156187500).

Almost surely, 2^40698612864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40698612864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79968000000).

40698612864 is an abundant number, since it is smaller than the sum of its proper divisors (119237387136).

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

40698612864 is a wasteful number, since it uses less digits than its factorization.

40698612864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 40698612864 in words is "forty billion, six hundred ninety-eight million, six hundred twelve thousand, eight hundred sixty-four".