40153514521 has 4 divisors (see below), whose sum is σ = 41538118500. Its totient is φ = 38768910544.

The previous prime is 40153514507. The next prime is 40153514567. The reversal of 40153514521 is 12541535104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10148346121 + 30005168400 = 100739^2 + 173220^2 .

It is a cyclic number.

It is not a de Polignac number, because 40153514521 - 2¹⁹ = 40152990233 is a prime.

It is a super-2 number, since 2×40153514521² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40153514501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692301946 + ... + 692302003.

It is an arithmetic number, because the mean of its divisors is an integer number (10384529625).

Almost surely, 2^40153514521 is an apocalyptic number.

It is an amenable number.

40153514521 is a deficient number, since it is larger than the sum of its proper divisors (1384603979).

40153514521 is a wasteful number, since it uses less digits than its factorization.

40153514521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384603978.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 40153514521 in words is "forty billion, one hundred fifty-three million, five hundred fourteen thousand, five hundred twenty-one".