72426452364754 has 4 divisors (see below), whose sum is σ = 108639678547134. Its totient is φ = 36213226182376.

The previous prime is 72426452364751. The next prime is 72426452364787. The reversal of 72426452364754 is 45746325462427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 47917863486529 + 24508588878225 = 6922273^2 + 4950615^2 .

It is a super-2 number, since 2×72426452364754² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72426452364692 and 72426452364701.

It is not an unprimeable number, because it can be changed into a prime (72426452364751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18106613091187 + ... + 18106613091190.

Almost surely, 2^{72426452364754} is an apocalyptic number.

72426452364754 is a deficient number, since it is larger than the sum of its proper divisors (36213226182380).

72426452364754 is a wasteful number, since it uses less digits than its factorization.

72426452364754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36213226182379.

The product of its digits is 270950400, while the sum is 61.

The spelling of 72426452364754 in words is "seventy-two trillion, four hundred twenty-six billion, four hundred fifty-two million, three hundred sixty-four thousand, seven hundred fifty-four".