544155551394 has 64 divisors (see below), whose sum is σ = 1418251597056. Its totient is φ = 135071576064.

The previous prime is 544155551371. The next prime is 544155551417. The reversal of 544155551394 is 493155551445.

It is an interprime number because it is at equal distance from previous prime (544155551371) and next prime (544155551417).

It is a super-2 number, since 2×544155551394² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 29303127 + ... + 29321690.

It is an arithmetic number, because the mean of its divisors is an integer number (22160181204).

Almost surely, 2^544155551394 is an apocalyptic number.

544155551394 is an abundant number, since it is smaller than the sum of its proper divisors (874096045662).

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

544155551394 is a wasteful number, since it uses less digits than its factorization.

544155551394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58624859.

The product of its digits is 5400000, while the sum is 51.

Adding to 544155551394 its sum of digits (51), we get a palindrome (544155551445).

The spelling of 544155551394 in words is "five hundred forty-four billion, one hundred fifty-five million, five hundred fifty-one thousand, three hundred ninety-four".