39979917086720 has 832 divisors, whose sum is σ = 112226427500544. Its totient is φ = 13553652203520.

The previous prime is 39979917086657. The next prime is 39979917086741. The reversal of 39979917086720 is 2768071997993.

It is a tau number, because it is divible by the number of its divisors (832).

It is a super-2 number, since 2×39979917086720² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15253687010 + ... + 15253689630.

Almost surely, 2^{39979917086720} 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 39979917086720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56113213750272).

39979917086720 is an abundant number, since it is smaller than the sum of its proper divisors (72246510413824).

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

39979917086720 is a wasteful number, since it uses less digits than its factorization.

39979917086720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786 (or 2764 counting only the distinct ones).

The product of its (nonzero) digits is 648121824, while the sum is 77.

The spelling of 39979917086720 in words is "thirty-nine trillion, nine hundred seventy-nine billion, nine hundred seventeen million, eighty-six thousand, seven hundred twenty".