40021251052 has 12 divisors (see below), whose sum is σ = 70082298216. Its totient is φ = 19997737280.

The previous prime is 40021251041. The next prime is 40021251079. The reversal of 40021251052 is 25015212004.

It is a super-2 number, since 2×40021251052² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3215074 + ... + 3227497.

It is an arithmetic number, because the mean of its divisors is an integer number (5840191518).

Almost surely, 2^40021251052 is an apocalyptic number.

It is an amenable number.

40021251052 is a deficient number, since it is larger than the sum of its proper divisors (30061047164).

40021251052 is a wasteful number, since it uses less digits than its factorization.

40021251052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6444128 (or 6444126 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 40021251052 its reverse (25015212004), we get a palindrome (65036463056).

The spelling of 40021251052 in words is "forty billion, twenty-one million, two hundred fifty-one thousand, fifty-two".