73399497154 has 4 divisors (see below), whose sum is σ = 110099245734. Its totient is φ = 36699748576.

The previous prime is 73399497079. The next prime is 73399497167. The reversal of 73399497154 is 45179499337.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45179499337 = 7 ⋅6454214191.

It can be written as a sum of positive squares in only one way, i.e., 68662341225 + 4737155929 = 262035^2 + 68827^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73399497092 and 73399497101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18349874287 + ... + 18349874290.

Almost surely, 2^73399497154 is an apocalyptic number.

73399497154 is a deficient number, since it is larger than the sum of its proper divisors (36699748580).

73399497154 is a wasteful number, since it uses less digits than its factorization.

73399497154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36699748579.

The product of its digits is 25719120, while the sum is 61.

The spelling of 73399497154 in words is "seventy-three billion, three hundred ninety-nine million, four hundred ninety-seven thousand, one hundred fifty-four".