73774247537 has 2 divisors, whose sum is σ = 73774247538. Its totient is φ = 73774247536.

The previous prime is 73774247483. The next prime is 73774247581. The reversal of 73774247537 is 73574247737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66913272976 + 6860974561 = 258676^2 + 82831^2 .

It is a cyclic number.

It is not a de Polignac number, because 73774247537 - 2³⁶ = 5054770801 is a prime.

It is not a weakly prime, because it can be changed into another prime (73774247597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36887123768 + 36887123769.

It is an arithmetic number, because the mean of its divisors is an integer number (36887123769).

Almost surely, 2^73774247537 is an apocalyptic number.

It is an amenable number.

73774247537 is a deficient number, since it is larger than the sum of its proper divisors (1).

73774247537 is an equidigital number, since it uses as much as digits as its factorization.

73774247537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24202080, while the sum is 56.

The spelling of 73774247537 in words is "seventy-three billion, seven hundred seventy-four million, two hundred forty-seven thousand, five hundred thirty-seven".