37223772457 has 4 divisors (see below), whose sum is σ = 37226968660. Its totient is φ = 37220576256.

The previous prime is 37223772433. The next prime is 37223772463. The reversal of 37223772457 is 75427732273.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75427732273 = 307 ⋅245692939.

It can be written as a sum of positive squares in 2 ways, for example, as 32586026256 + 4637746201 = 180516^2 + 68101^2 .

It is a cyclic number.

It is not a de Polignac number, because 37223772457 - 2¹⁵ = 37223739689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 37223772457.

It is not an unprimeable number, because it can be changed into a prime (37223772497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1580568 + ... + 1603945.

It is an arithmetic number, because the mean of its divisors is an integer number (9306742165).

Almost surely, 2^37223772457 is an apocalyptic number.

It is an amenable number.

37223772457 is a deficient number, since it is larger than the sum of its proper divisors (3196203).

37223772457 is a wasteful number, since it uses less digits than its factorization.

37223772457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196202.

The product of its digits is 3457440, while the sum is 49.

The spelling of 37223772457 in words is "thirty-seven billion, two hundred twenty-three million, seven hundred seventy-two thousand, four hundred fifty-seven".