2421157313272 has 8 divisors (see below), whose sum is σ = 4539669962400. Its totient is φ = 1210578656632.

The previous prime is 2421157313257. The next prime is 2421157313321. The reversal of 2421157313272 is 2723137511242.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2421157313272² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151322332072 + ... + 151322332087.

It is an arithmetic number, because the mean of its divisors is an integer number (567458745300).

Almost surely, 2^{2421157313272} is an apocalyptic number.

It is an amenable number.

2421157313272 is a deficient number, since it is larger than the sum of its proper divisors (2118512649128).

2421157313272 is a wasteful number, since it uses less digits than its factorization.

2421157313272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302644664165 (or 302644664161 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

The spelling of 2421157313272 in words is "two trillion, four hundred twenty-one billion, one hundred fifty-seven million, three hundred thirteen thousand, two hundred seventy-two".