37940797440 has 1344 divisors, whose sum is σ = 172689926400. Its totient is φ = 7729053696.

The previous prime is 37940797429. The next prime is 37940797441. The reversal of 37940797440 is 4479704973.

37940797440 is a `hidden beast` number, since 3 + 79 + 40 + 7 + 97 + 440 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a super-2 number, since 2×37940797440² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37940797441) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1308303346 + ... + 1308303374.

Almost surely, 2^37940797440 is an apocalyptic number.

37940797440 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 37940797440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86344963200).

37940797440 is an abundant number, since it is smaller than the sum of its proper divisors (134749128960).

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

37940797440 is a wasteful number, since it uses less digits than its factorization.

37940797440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 54.

The spelling of 37940797440 in words is "thirty-seven billion, nine hundred forty million, seven hundred ninety-seven thousand, four hundred forty".