73726401819 has 32 divisors (see below), whose sum is σ = 114055292416. Its totient is φ = 41488381440.

The previous prime is 73726401817. The next prime is 73726401869. The reversal of 73726401819 is 91810462737.

It is a happy number.

It is not a de Polignac number, because 73726401819 - 2¹ = 73726401817 is a prime.

It is a super-2 number, since 2×73726401819² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73726401811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7138179 + ... + 7148499.

It is an arithmetic number, because the mean of its divisors is an integer number (3564227888).

Almost surely, 2^73726401819 is an apocalyptic number.

73726401819 is a deficient number, since it is larger than the sum of its proper divisors (40328890597).

73726401819 is a wasteful number, since it uses less digits than its factorization.

73726401819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15475.

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 73726401819 in words is "seventy-three billion, seven hundred twenty-six million, four hundred one thousand, eight hundred nineteen".