13980526501 has 4 divisors (see below), whose sum is σ = 14116259872. Its totient is φ = 13844793132.

The previous prime is 13980526459. The next prime is 13980526519. The reversal of 13980526501 is 10562508931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10562508931 = 13 ⋅812500687.

It is a cyclic number.

It is not a de Polignac number, because 13980526501 - 2²¹ = 13978429349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13980526541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67866531 + ... + 67866736.

It is an arithmetic number, because the mean of its divisors is an integer number (3529064968).

Almost surely, 2^13980526501 is an apocalyptic number.

It is an amenable number.

13980526501 is a deficient number, since it is larger than the sum of its proper divisors (135733371).

13980526501 is a wasteful number, since it uses less digits than its factorization.

13980526501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135733370.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 13980526501 in words is "thirteen billion, nine hundred eighty million, five hundred twenty-six thousand, five hundred one".