70126021531 has 8 divisors (see below), whose sum is σ = 70351034544. Its totient is φ = 69901309920.

The previous prime is 70126021501. The next prime is 70126021591. The reversal of 70126021531 is 13512062107.

It is a happy number.

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 70126021531 - 2⁵ = 70126021499 is a prime.

It is a super-2 number, since 2×70126021531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70126021531.

It is not an unprimeable number, because it can be changed into a prime (70126021501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395425 + ... + 544621.

It is an arithmetic number, because the mean of its divisors is an integer number (8793879318).

Almost surely, 2^70126021531 is an apocalyptic number.

70126021531 is a deficient number, since it is larger than the sum of its proper divisors (225013013).

70126021531 is a wasteful number, since it uses less digits than its factorization.

70126021531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150701.

The product of its (nonzero) digits is 2520, while the sum is 28.

Adding to 70126021531 its reverse (13512062107), we get a palindrome (83638083638).

The spelling of 70126021531 in words is "seventy billion, one hundred twenty-six million, twenty-one thousand, five hundred thirty-one".