15480742081 has 16 divisors (see below), whose sum is σ = 18939110400. Its totient is φ = 12357757008.

The previous prime is 15480742037. The next prime is 15480742099. The reversal of 15480742081 is 18024708451.

It is a cyclic number.

It is not a de Polignac number, because 15480742081 - 2¹³ = 15480733889 is a prime.

It is a super-2 number, since 2×15480742081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15480740081) 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, 978565 + ... + 994258.

It is an arithmetic number, because the mean of its divisors is an integer number (1183694400).

Almost surely, 2^15480742081 is an apocalyptic number.

It is an amenable number.

15480742081 is a deficient number, since it is larger than the sum of its proper divisors (3458368319).

15480742081 is a wasteful number, since it uses less digits than its factorization.

15480742081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972908.

The product of its (nonzero) digits is 71680, while the sum is 40.

The spelling of 15480742081 in words is "fifteen billion, four hundred eighty million, seven hundred forty-two thousand, eighty-one".