139441545782091 has 128 divisors (see below), whose sum is σ = 246339668613120. Its totient is φ = 77251359709440.

The previous prime is 139441545782069. The next prime is 139441545782107. The reversal of 139441545782091 is 190287545144931.

139441545782091 is a `hidden beast` number, since 1 + 3 + 9 + 4 + 4 + 1 + 54 + 578 + 2 + 0 + 9 + 1 = 666.

It is not a de Polignac number, because 139441545782091 - 2⁵ = 139441545782059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (139441545782291) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 158729640 + ... + 159605706.

It is an arithmetic number, because the mean of its divisors is an integer number (1924528661040).

Almost surely, 2^{139441545782091} is an apocalyptic number.

139441545782091 is a deficient number, since it is larger than the sum of its proper divisors (106898122831029).

139441545782091 is an frugal number, since it uses more digits than its factorization.

139441545782091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876413 (or 876395 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 63.

The spelling of 139441545782091 in words is "one hundred thirty-nine trillion, four hundred forty-one billion, five hundred forty-five million, seven hundred eighty-two thousand, ninety-one".