40212261501 has 4 divisors (see below), whose sum is σ = 53616348672. Its totient is φ = 26808174332.

The previous prime is 40212261493. The next prime is 40212261511. The reversal of 40212261501 is 10516221204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40212261501 - 2³ = 40212261493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40212261511) 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, 6702043581 + ... + 6702043586.

It is an arithmetic number, because the mean of its divisors is an integer number (13404087168).

Almost surely, 2^40212261501 is an apocalyptic number.

It is an amenable number.

40212261501 is a deficient number, since it is larger than the sum of its proper divisors (13404087171).

40212261501 is a wasteful number, since it uses less digits than its factorization.

40212261501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13404087170.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 40212261501 its reverse (10516221204), we get a palindrome (50728482705).

The spelling of 40212261501 in words is "forty billion, two hundred twelve million, two hundred sixty-one thousand, five hundred one".