72858641949 has 6 divisors (see below), whose sum is σ = 105240260606. Its totient is φ = 48572427960.

The previous prime is 72858641941. The next prime is 72858641957. The reversal of 72858641949 is 94914685827.

72858641949 is a `hidden beast` number, since 7 + 2 + 8 + 586 + 4 + 1 + 9 + 49 = 666.

It is an interprime number because it is at equal distance from previous prime (72858641941) and next prime (72858641957).

It can be written as a sum of positive squares in only one way, i.e., 60324272100 + 12534369849 = 245610^2 + 111957^2 .

It is not a de Polignac number, because 72858641949 - 2³ = 72858641941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72858641941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4047702322 + ... + 4047702339.

Almost surely, 2^72858641949 is an apocalyptic number.

It is an amenable number.

72858641949 is a deficient number, since it is larger than the sum of its proper divisors (32381618657).

72858641949 is a wasteful number, since it uses less digits than its factorization.

72858641949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8095404667 (or 8095404664 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The spelling of 72858641949 in words is "seventy-two billion, eight hundred fifty-eight million, six hundred forty-one thousand, nine hundred forty-nine".