37987478973 has 6 divisors (see below), whose sum is σ = 54870802974. Its totient is φ = 25324985976.

The previous prime is 37987478941. The next prime is 37987478999.

37987478973 is a `hidden beast` number, since 3 + 7 + 9 + 87 + 478 + 9 + 73 = 666.

37987478973 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 37429480089 + 557998884 = 193467^2 + 23622^2 .

It is not a de Polignac number, because 37987478973 - 2⁵ = 37987478941 is a prime.

It is a super-3 number, since 3×37987478973³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37987478923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2110415490 + ... + 2110415507.

It is an arithmetic number, because the mean of its divisors is an integer number (9145133829).

Almost surely, 2^37987478973 is an apocalyptic number.

It is an amenable number.

37987478973 is a deficient number, since it is larger than the sum of its proper divisors (16883324001).

37987478973 is a wasteful number, since it uses less digits than its factorization.

37987478973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220831003 (or 4220831000 counting only the distinct ones).

The product of its digits is 448084224, while the sum is 72.

The spelling of 37987478973 in words is "thirty-seven billion, nine hundred eighty-seven million, four hundred seventy-eight thousand, nine hundred seventy-three".