544690140891 has 32 divisors (see below), whose sum is σ = 828216119808. Its totient is φ = 315442383360.

The previous prime is 544690140889. The next prime is 544690140901. The reversal of 544690140891 is 198041096445.

It is not a de Polignac number, because 544690140891 - 2¹ = 544690140889 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (544690140091) 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, 6873706 + ... + 6952496.

It is an arithmetic number, because the mean of its divisors is an integer number (25881753744).

Almost surely, 2^544690140891 is an apocalyptic number.

544690140891 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

544690140891 is a deficient number, since it is larger than the sum of its proper divisors (283525978917).

544690140891 is a wasteful number, since it uses less digits than its factorization.

544690140891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89251.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 544690140891 in words is "five hundred forty-four billion, six hundred ninety million, one hundred forty thousand, eight hundred ninety-one".