15477319020 has 96 divisors (see below), whose sum is σ = 44298067968. Its totient is φ = 4035864832.

The previous prime is 15477318979. The next prime is 15477319021. The reversal of 15477319020 is 2091377451.

It is a self number, because there is not a number n which added to its sum of digits gives 15477319020.

It is not an unprimeable number, because it can be changed into a prime (15477319021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4885477 + ... + 4888643.

It is an arithmetic number, because the mean of its divisors is an integer number (461438208).

Almost surely, 2^15477319020 is an apocalyptic number.

15477319020 is a gapful number since it is divisible by the number (10) 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 15477319020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22149033984).

15477319020 is an abundant number, since it is smaller than the sum of its proper divisors (28820748948).

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

15477319020 is a wasteful number, since it uses less digits than its factorization.

15477319020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4959 (or 4957 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The spelling of 15477319020 in words is "fifteen billion, four hundred seventy-seven million, three hundred nineteen thousand, twenty".