15432471961 has 8 divisors (see below), whose sum is σ = 15509979648. Its totient is φ = 15355116000.

The previous prime is 15432471947. The next prime is 15432471979. The reversal of 15432471961 is 16917423451.

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 15432471961 - 2¹³ = 15432463769 is a prime.

It is a super-2 number, since 2×15432471961² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15432471911) 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, 168816 + ... + 243646.

It is an arithmetic number, because the mean of its divisors is an integer number (1938747456).

Almost surely, 2^15432471961 is an apocalyptic number.

It is an amenable number.

15432471961 is a deficient number, since it is larger than the sum of its proper divisors (77507687).

15432471961 is an equidigital number, since it uses as much as digits as its factorization.

15432471961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75863.

The product of its digits is 181440, while the sum is 43.

The spelling of 15432471961 in words is "fifteen billion, four hundred thirty-two million, four hundred seventy-one thousand, nine hundred sixty-one".