15574472949 has 16 divisors (see below), whose sum is σ = 23737794560. Its totient is φ = 8897724720.

The previous prime is 15574472857. The next prime is 15574472981. The reversal of 15574472949 is 94927447551.

It is not a de Polignac number, because 15574472949 - 2⁷ = 15574472821 is a prime.

It is a super-3 number, since 3×15574472949³ (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 (15574473949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17484 + ... + 177354.

It is an arithmetic number, because the mean of its divisors is an integer number (1483612160).

Almost surely, 2^15574472949 is an apocalyptic number.

It is an amenable number.

15574472949 is a deficient number, since it is larger than the sum of its proper divisors (8163321611).

15574472949 is a wasteful number, since it uses less digits than its factorization.

15574472949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164520.

The product of its digits is 12700800, while the sum is 57.

The spelling of 15574472949 in words is "fifteen billion, five hundred seventy-four million, four hundred seventy-two thousand, nine hundred forty-nine".