70006011621621 has 4 divisors (see below), whose sum is σ = 93341348828832. Its totient is φ = 46670674414412.

The previous prime is 70006011621619. The next prime is 70006011621643. The reversal of 70006011621621 is 12612611060007.

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 70006011621621 - 2¹ = 70006011621619 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70006011621691) 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, 11667668603601 + ... + 11667668603606.

It is an arithmetic number, because the mean of its divisors is an integer number (23335337207208).

Almost surely, 2^{70006011621621} is an apocalyptic number.

It is an amenable number.

70006011621621 is a deficient number, since it is larger than the sum of its proper divisors (23335337207211).

70006011621621 is a wasteful number, since it uses less digits than its factorization.

70006011621621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23335337207210.

The product of its (nonzero) digits is 6048, while the sum is 33.

Adding to 70006011621621 its reverse (12612611060007), we get a palindrome (82618622681628).

The spelling of 70006011621621 in words is "seventy trillion, six billion, eleven million, six hundred twenty-one thousand, six hundred twenty-one".