15420535156261 has 8 divisors (see below), whose sum is σ = 15451080126624. Its totient is φ = 15390013969680.

The previous prime is 15420535156249. The next prime is 15420535156331. The reversal of 15420535156261 is 16265153502451.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 15420535156261 - 2⁷ = 15420535156133 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 (15420535156561) 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, 4647655 + ... + 7241668.

It is an arithmetic number, because the mean of its divisors is an integer number (1931385015828).

Almost surely, 2^{15420535156261} is an apocalyptic number.

It is an amenable number.

15420535156261 is a deficient number, since it is larger than the sum of its proper divisors (30544970363).

15420535156261 is a wasteful number, since it uses less digits than its factorization.

15420535156261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11891891.

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 15420535156261 in words is "fifteen trillion, four hundred twenty billion, five hundred thirty-five million, one hundred fifty-six thousand, two hundred sixty-one".