15620201421 has 8 divisors (see below), whose sum is σ = 22720293024. Its totient is φ = 9466788720.

The previous prime is 15620201411. The next prime is 15620201537. The reversal of 15620201421 is 12410202651.

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

It is not a de Polignac number, because 15620201421 - 2²¹ = 15618104269 is a prime.

It is a super-2 number, since 2×15620201421² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15620201391 and 15620201400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15620201411) 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, 236669686 + ... + 236669751.

It is an arithmetic number, because the mean of its divisors is an integer number (2840036628).

Almost surely, 2^15620201421 is an apocalyptic number.

15620201421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15620201421 is a deficient number, since it is larger than the sum of its proper divisors (7100091603).

15620201421 is a wasteful number, since it uses less digits than its factorization.

15620201421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473339451.

The product of its (nonzero) digits is 960, while the sum is 24.

The spelling of 15620201421 in words is "fifteen billion, six hundred twenty million, two hundred one thousand, four hundred twenty-one".