37221766666 has 64 divisors (see below), whose sum is σ = 65122928640. Its totient is φ = 15628334400.

The previous prime is 37221766651. The next prime is 37221766667. The reversal of 37221766666 is 66666712273.

It is not an unprimeable number, because it can be changed into a prime (37221766667) 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, 57887341 + ... + 57887983.

It is an arithmetic number, because the mean of its divisors is an integer number (1017545760).

Almost surely, 2^37221766666 is an apocalyptic number.

37221766666 is a deficient number, since it is larger than the sum of its proper divisors (27901161974).

37221766666 is a wasteful number, since it uses less digits than its factorization.

37221766666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139.

The product of its digits is 4572288, while the sum is 52.

The spelling of 37221766666 in words is "thirty-seven billion, two hundred twenty-one million, seven hundred sixty-six thousand, six hundred sixty-six".