15870271551 has 8 divisors (see below), whose sum is σ = 21255252480. Its totient is φ = 10532735832.

The previous prime is 15870271507. The next prime is 15870271567. The reversal of 15870271551 is 15517207851.

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

It is not a de Polignac number, because 15870271551 - 2¹³ = 15870263359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15870278551) 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, 11860521 + ... + 11861858.

It is an arithmetic number, because the mean of its divisors is an integer number (2656906560).

Almost surely, 2^15870271551 is an apocalyptic number.

15870271551 is a deficient number, since it is larger than the sum of its proper divisors (5384980929).

15870271551 is a wasteful number, since it uses less digits than its factorization.

15870271551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23722605.

The product of its (nonzero) digits is 98000, while the sum is 42.

The spelling of 15870271551 in words is "fifteen billion, eight hundred seventy million, two hundred seventy-one thousand, five hundred fifty-one".