73747472501 has 4 divisors (see below), whose sum is σ = 73773841932. Its totient is φ = 73721103072.

The previous prime is 73747472479. The next prime is 73747472531. The reversal of 73747472501 is 10527474737.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34324972900 + 39422499601 = 185270^2 + 198551^2 .

It is a cyclic number.

It is not a de Polignac number, because 73747472501 - 2²² = 73743278197 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 (73747472531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13180520 + ... + 13186113.

It is an arithmetic number, because the mean of its divisors is an integer number (18443460483).

Almost surely, 2^73747472501 is an apocalyptic number.

It is an amenable number.

73747472501 is a deficient number, since it is larger than the sum of its proper divisors (26369431).

73747472501 is a wasteful number, since it uses less digits than its factorization.

73747472501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26369430.

The product of its (nonzero) digits is 1152480, while the sum is 47.

The spelling of 73747472501 in words is "seventy-three billion, seven hundred forty-seven million, four hundred seventy-two thousand, five hundred one".