15503197340 has 96 divisors (see below), whose sum is σ = 34025177088. Its totient is φ = 5927040000.

The previous prime is 15503197327. The next prime is 15503197351. The reversal of 15503197340 is 4379130551.

It is a junction number, because it is equal to n+sod(n) for n = 15503197294 and 15503197303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31574495 + ... + 31574985.

It is an arithmetic number, because the mean of its divisors is an integer number (354428928).

Almost surely, 2^15503197340 is an apocalyptic number.

15503197340 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 15503197340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17012588544).

15503197340 is an abundant number, since it is smaller than the sum of its proper divisors (18521979748).

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

15503197340 is a wasteful number, since it uses less digits than its factorization.

15503197340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

The spelling of 15503197340 in words is "fifteen billion, five hundred three million, one hundred ninety-seven thousand, three hundred forty".