39969502468 has 144 divisors (see below), whose sum is σ = 88238626560. Its totient is φ = 15735143424.

The previous prime is 39969502423. The next prime is 39969502471. The reversal of 39969502468 is 86420596993.

It is a super-2 number, since 2×39969502468² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42205971 + ... + 42206917.

It is an arithmetic number, because the mean of its divisors is an integer number (612768240).

Almost surely, 2^39969502468 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 39969502468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44119313280).

39969502468 is an abundant number, since it is smaller than the sum of its proper divisors (48269124092).

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

39969502468 is a wasteful number, since it uses less digits than its factorization.

39969502468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 61.

The spelling of 39969502468 in words is "thirty-nine billion, nine hundred sixty-nine million, five hundred two thousand, four hundred sixty-eight".