37287051421 has 2 divisors, whose sum is σ = 37287051422. Its totient is φ = 37287051420.

The previous prime is 37287051413. The next prime is 37287051437. The reversal of 37287051421 is 12415078273.

37287051421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35883724900 + 1403326521 = 189430^2 + 37461^2 .

It is a cyclic number.

It is not a de Polignac number, because 37287051421 - 2³ = 37287051413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37287054421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18643525710 + 18643525711.

It is an arithmetic number, because the mean of its divisors is an integer number (18643525711).

Almost surely, 2^37287051421 is an apocalyptic number.

It is an amenable number.

37287051421 is a deficient number, since it is larger than the sum of its proper divisors (1).

37287051421 is an equidigital number, since it uses as much as digits as its factorization.

37287051421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 37287051421 in words is "thirty-seven billion, two hundred eighty-seven million, fifty-one thousand, four hundred twenty-one".