37979979840 has 560 divisors, whose sum is σ = 152173131264. Its totient is φ = 8908185600.

The previous prime is 37979979839. The next prime is 37979979841. The reversal of 37979979840 is 4897997973.

It is an interprime number because it is at equal distance from previous prime (37979979839) and next prime (37979979841).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (37979979841) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8836572 + ... + 8840868.

Almost surely, 2^37979979840 is an apocalyptic number.

37979979840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 37979979840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76086565632).

37979979840 is an abundant number, since it is smaller than the sum of its proper divisors (114193151424).

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

37979979840 is a wasteful number, since it uses less digits than its factorization.

37979979840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4368 (or 4349 counting only the distinct ones).

The product of its (nonzero) digits is 216040608, while the sum is 72.

The spelling of 37979979840 in words is "thirty-seven billion, nine hundred seventy-nine million, nine hundred seventy-nine thousand, eight hundred forty".