53958194645 has 16 divisors (see below), whose sum is σ = 66736547568. Its totient is φ = 41850385920.

The previous prime is 53958194627. The next prime is 53958194659. The reversal of 53958194645 is 54649185935.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 11524666609 + 42433528036 = 107353^2 + 205994^2 .

It is not a de Polignac number, because 53958194645 - 2²² = 53954000341 is a prime.

It is a super-2 number, since 2×53958194645² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466994 + ... + 570963.

It is an arithmetic number, because the mean of its divisors is an integer number (4171034223).

Almost surely, 2^53958194645 is an apocalyptic number.

It is an amenable number.

53958194645 is a deficient number, since it is larger than the sum of its proper divisors (12778352923).

53958194645 is a wasteful number, since it uses less digits than its factorization.

53958194645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038280.

The product of its digits is 23328000, while the sum is 59.

The spelling of 53958194645 in words is "fifty-three billion, nine hundred fifty-eight million, one hundred ninety-four thousand, six hundred forty-five".