15400344554 has 24 divisors (see below), whose sum is σ = 28040383008. Its totient is φ = 6313183800.

The previous prime is 15400344539. The next prime is 15400344571. The reversal of 15400344554 is 45544300451.

It is a super-2 number, since 2×15400344554² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3413972 + ... + 3418479.

It is an arithmetic number, because the mean of its divisors is an integer number (1168349292).

Almost surely, 2^15400344554 is an apocalyptic number.

15400344554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

15400344554 is a deficient number, since it is larger than the sum of its proper divisors (12640038454).

15400344554 is a wasteful number, since it uses less digits than its factorization.

15400344554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6832490 (or 6832483 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 15400344554 in words is "fifteen billion, four hundred million, three hundred forty-four thousand, five hundred fifty-four".