15774533952 has 112 divisors (see below), whose sum is σ = 42146890560. Its totient is φ = 5206781952.

The previous prime is 15774533947. The next prime is 15774533977. The reversal of 15774533952 is 25933547751.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 15774533895 and 15774533904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9519108 + ... + 9520764.

Almost surely, 2^15774533952 is an apocalyptic number.

15774533952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15774533952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21073445280).

15774533952 is an abundant number, since it is smaller than the sum of its proper divisors (26372356608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15774533952 is a wasteful number, since it uses less digits than its factorization.

15774533952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128 (or 2118 counting only the distinct ones).

The product of its digits is 3969000, while the sum is 51.

The spelling of 15774533952 in words is "fifteen billion, seven hundred seventy-four million, five hundred thirty-three thousand, nine hundred fifty-two".