28070155651 has 2 divisors, whose sum is σ = 28070155652. Its totient is φ = 28070155650.

The previous prime is 28070155637. The next prime is 28070155661. The reversal of 28070155651 is 15655107082.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28070155651 - 2¹³ = 28070147459 is a prime.

It is not a weakly prime, because it can be changed into another prime (28070155601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14035077825 + 14035077826.

It is an arithmetic number, because the mean of its divisors is an integer number (14035077826).

Almost surely, 2^28070155651 is an apocalyptic number.

28070155651 is a deficient number, since it is larger than the sum of its proper divisors (1).

28070155651 is an equidigital number, since it uses as much as digits as its factorization.

28070155651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84000, while the sum is 40.

The spelling of 28070155651 in words is "twenty-eight billion, seventy million, one hundred fifty-five thousand, six hundred fifty-one".