37647428421 has 8 divisors (see below), whose sum is σ = 53149310784. Its totient is φ = 23621915840.

The previous prime is 37647428383. The next prime is 37647428431. The reversal of 37647428421 is 12482474673.

37647428421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 37647428421 - 2⁷ = 37647428293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37647428431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369092385 + ... + 369092486.

It is an arithmetic number, because the mean of its divisors is an integer number (6643663848).

Almost surely, 2^37647428421 is an apocalyptic number.

It is an amenable number.

37647428421 is a deficient number, since it is larger than the sum of its proper divisors (15501882363).

37647428421 is a wasteful number, since it uses less digits than its factorization.

37647428421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738184891.

The product of its digits is 1806336, while the sum is 48.

The spelling of 37647428421 in words is "thirty-seven billion, six hundred forty-seven million, four hundred twenty-eight thousand, four hundred twenty-one".