36023497981 has 16 divisors (see below), whose sum is σ = 39579331968. Its totient is φ = 32649523200.

The previous prime is 36023497969. The next prime is 36023498003. The reversal of 36023497981 is 18979432063.

It is a cyclic number.

It is not a de Polignac number, because 36023497981 - 2¹⁷ = 36023366909 is a prime.

It is a super-2 number, since 2×36023497981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36023497931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295140 + ... + 398941.

It is an arithmetic number, because the mean of its divisors is an integer number (2473708248).

Almost surely, 2^36023497981 is an apocalyptic number.

It is an amenable number.

36023497981 is a deficient number, since it is larger than the sum of its proper divisors (3555833987).

36023497981 is a wasteful number, since it uses less digits than its factorization.

36023497981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694212.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 36023497981 in words is "thirty-six billion, twenty-three million, four hundred ninety-seven thousand, nine hundred eighty-one".