31666152011442 has 64 divisors (see below), whose sum is σ = 68340033538560. Its totient is φ = 9724003660800.

The previous prime is 31666152011399. The next prime is 31666152011449. The reversal of 31666152011442 is 24411025166613.

It is a junction number, because it is equal to n+sod(n) for n = 31666152011394 and 31666152011403.

It is not an unprimeable number, because it can be changed into a prime (31666152011449) 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, 848462142 + ... + 848499462.

It is an arithmetic number, because the mean of its divisors is an integer number (1067813024040).

Almost surely, 2^{31666152011442} is an apocalyptic number.

31666152011442 is an abundant number, since it is smaller than the sum of its proper divisors (36673881527118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31666152011442 is a wasteful number, since it uses less digits than its factorization.

31666152011442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58739.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 31666152011442 in words is "thirty-one trillion, six hundred sixty-six billion, one hundred fifty-two million, eleven thousand, four hundred forty-two".