15226653421 has 12 divisors (see below), whose sum is σ = 17736265920. Its totient is φ = 13034007000.

The previous prime is 15226653413. The next prime is 15226653427. The reversal of 15226653421 is 12435662251.

It is not a de Polignac number, because 15226653421 - 2³ = 15226653413 is a prime.

It is a super-5 number, since 5×15226653421⁵ (a number of 52 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15226653427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170091 + ... + 243688.

It is an arithmetic number, because the mean of its divisors is an integer number (1478022160).

Almost surely, 2^15226653421 is an apocalyptic number.

It is an amenable number.

15226653421 is a deficient number, since it is larger than the sum of its proper divisors (2509612499).

15226653421 is an equidigital number, since it uses as much as digits as its factorization.

15226653421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414544 (or 414537 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The spelling of 15226653421 in words is "fifteen billion, two hundred twenty-six million, six hundred fifty-three thousand, four hundred twenty-one".