970815221887 has 8 divisors (see below), whose sum is σ = 1109510598656. Its totient is φ = 832121717112.

The previous prime is 970815221881. The next prime is 970815221947. The reversal of 970815221887 is 788122518079.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 970815221887 - 2³¹ = 968667738239 is a prime.

It is a super-3 number, since 3×970815221887³ (a number of 37 digits) contains 333 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 (970815221881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916258 + ... + 1667680.

It is an arithmetic number, because the mean of its divisors is an integer number (138688824832).

Almost surely, 2^970815221887 is an apocalyptic number.

970815221887 is a deficient number, since it is larger than the sum of its proper divisors (138695376769).

970815221887 is a wasteful number, since it uses less digits than its factorization.

970815221887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935997.

The product of its (nonzero) digits is 4515840, while the sum is 58.

The spelling of 970815221887 in words is "nine hundred seventy billion, eight hundred fifteen million, two hundred twenty-one thousand, eight hundred eighty-seven".