38902970521551 has 16 divisors (see below), whose sum is σ = 54152236509696. Its totient is φ = 24795607627296.

The previous prime is 38902970521517. The next prime is 38902970521561. The reversal of 38902970521551 is 15512507920983.

It is not a de Polignac number, because 38902970521551 - 2⁷ = 38902970521423 is a prime.

It is a super-2 number, since 2×38902970521551² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38902970521491 and 38902970521500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38902970521561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137172315 + ... + 137455628.

It is an arithmetic number, because the mean of its divisors is an integer number (3384514781856).

Almost surely, 2^{38902970521551} is an apocalyptic number.

38902970521551 is a deficient number, since it is larger than the sum of its proper divisors (15249265988145).

38902970521551 is a wasteful number, since it uses less digits than its factorization.

38902970521551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274630022.

The product of its (nonzero) digits is 6804000, while the sum is 57.

The spelling of 38902970521551 in words is "thirty-eight trillion, nine hundred two billion, nine hundred seventy million, five hundred twenty-one thousand, five hundred fifty-one".