15320215461 has 8 divisors (see below), whose sum is σ = 20428913344. Its totient is φ = 10212497280.

The previous prime is 15320215423. The next prime is 15320215543. The reversal of 15320215461 is 16451202351.

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

It is not a de Polignac number, because 15320215461 - 2⁷ = 15320215333 is a prime.

It is a super-3 number, since 3×15320215461³ (a number of 32 digits) contains 333 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 (15320215661) 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, 207625 + ... + 271566.

It is an arithmetic number, because the mean of its divisors is an integer number (2553614168).

Almost surely, 2^15320215461 is an apocalyptic number.

It is an amenable number.

15320215461 is a deficient number, since it is larger than the sum of its proper divisors (5108697883).

15320215461 is a wasteful number, since it uses less digits than its factorization.

15320215461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489851.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 15320215461 in words is "fifteen billion, three hundred twenty million, two hundred fifteen thousand, four hundred sixty-one".