70020342637 has 4 divisors (see below), whose sum is σ = 80023248736. Its totient is φ = 60017436540.

The previous prime is 70020342541. The next prime is 70020342653. The reversal of 70020342637 is 73624302007.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-70020342637 is a prime.

It is a super-2 number, since 2×70020342637² (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 (70020342677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5001453039 + ... + 5001453052.

It is an arithmetic number, because the mean of its divisors is an integer number (20005812184).

Almost surely, 2^70020342637 is an apocalyptic number.

It is an amenable number.

70020342637 is a deficient number, since it is larger than the sum of its proper divisors (10002906099).

70020342637 is a wasteful number, since it uses less digits than its factorization.

70020342637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10002906098.

The product of its (nonzero) digits is 42336, while the sum is 34.

The spelling of 70020342637 in words is "seventy billion, twenty million, three hundred forty-two thousand, six hundred thirty-seven".