38515251561 has 8 divisors (see below), whose sum is σ = 54374472864. Its totient is φ = 24166432320.

The previous prime is 38515251547. The next prime is 38515251571. The reversal of 38515251561 is 16515251583.

38515251561 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 not a de Polignac number, because 38515251561 - 2⁶ = 38515251497 is a prime.

It is a super-2 number, since 2×38515251561² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38515251521) 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, 377600455 + ... + 377600556.

It is an arithmetic number, because the mean of its divisors is an integer number (6796809108).

Almost surely, 2^38515251561 is an apocalyptic number.

It is an amenable number.

38515251561 is a deficient number, since it is larger than the sum of its proper divisors (15859221303).

38515251561 is a wasteful number, since it uses less digits than its factorization.

38515251561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755201031.

The product of its digits is 180000, while the sum is 42.

The spelling of 38515251561 in words is "thirty-eight billion, five hundred fifteen million, two hundred fifty-one thousand, five hundred sixty-one".