38078102421 has 6 divisors (see below), whose sum is σ = 55001703510. Its totient is φ = 25385401608.

The previous prime is 38078102389. The next prime is 38078102423. The reversal of 38078102421 is 12420187083.

It can be written as a sum of positive squares in only one way, i.e., 31475727396 + 6602375025 = 177414^2 + 81255^2 .

It is not a de Polignac number, because 38078102421 - 2⁵ = 38078102389 is a prime.

It is a super-2 number, since 2×38078102421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38078102423) 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, 2115450126 + ... + 2115450143.

It is an arithmetic number, because the mean of its divisors is an integer number (9166950585).

Almost surely, 2^38078102421 is an apocalyptic number.

It is an amenable number.

38078102421 is a deficient number, since it is larger than the sum of its proper divisors (16923601089).

38078102421 is a wasteful number, since it uses less digits than its factorization.

38078102421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4230900275 (or 4230900272 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 38078102421 in words is "thirty-eight billion, seventy-eight million, one hundred two thousand, four hundred twenty-one".