81011011037 has 8 divisors (see below), whose sum is σ = 93026998560. Its totient is φ = 69770248560.

The previous prime is 81011011019. The next prime is 81011011061. The reversal of 81011011037 is 73011011018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81011011037 - 2¹⁶ = 81010945501 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 (81011011007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193806038 + ... + 193806455.

It is an arithmetic number, because the mean of its divisors is an integer number (11628374820).

Almost surely, 2^81011011037 is an apocalyptic number.

It is an amenable number.

81011011037 is a deficient number, since it is larger than the sum of its proper divisors (12015987523).

81011011037 is a wasteful number, since it uses less digits than its factorization.

81011011037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387612523.

The product of its (nonzero) digits is 168, while the sum is 23.

The spelling of 81011011037 in words is "eighty-one billion, eleven million, eleven thousand, thirty-seven".