44400561619157 has 2 divisors, whose sum is σ = 44400561619158. Its totient is φ = 44400561619156.

The previous prime is 44400561619111. The next prime is 44400561619213. The reversal of 44400561619157 is 75191616500444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38391915446641 + 6008646172516 = 6196121^2 + 2451254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44400561619157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44400561619099 and 44400561619108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44400561919157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22200280809578 + 22200280809579.

It is an arithmetic number, because the mean of its divisors is an integer number (22200280809579).

Almost surely, 2^{44400561619157} is an apocalyptic number.

It is an amenable number.

44400561619157 is a deficient number, since it is larger than the sum of its proper divisors (1).

44400561619157 is an equidigital number, since it uses as much as digits as its factorization.

44400561619157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 44400561619157 in words is "forty-four trillion, four hundred billion, five hundred sixty-one million, six hundred nineteen thousand, one hundred fifty-seven".