13647772542 has 64 divisors (see below), whose sum is σ = 29161601280. Its totient is φ = 4245820416.

The previous prime is 13647772513. The next prime is 13647772547. The reversal of 13647772542 is 24527774631.

It is a junction number, because it is equal to n+sod(n) for n = 13647772491 and 13647772500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13647772547) 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, 2507448 + ... + 2512884.

It is an arithmetic number, because the mean of its divisors is an integer number (455650020).

Almost surely, 2^13647772542 is an apocalyptic number.

13647772542 is an abundant number, since it is smaller than the sum of its proper divisors (15513828738).

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

13647772542 is a wasteful number, since it uses less digits than its factorization.

13647772542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5785.

The product of its digits is 1975680, while the sum is 48.

The spelling of 13647772542 in words is "thirteen billion, six hundred forty-seven million, seven hundred seventy-two thousand, five hundred forty-two".