35720299987 has 4 divisors (see below), whose sum is σ = 36067099120. Its totient is φ = 35373500856.

The previous prime is 35720299969. The next prime is 35720300027. The reversal of 35720299987 is 78999202753.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35720299987 is a prime.

It is a super-2 number, since 2×35720299987² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35720291987) 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, 173399412 + ... + 173399617.

It is an arithmetic number, because the mean of its divisors is an integer number (9016774780).

Almost surely, 2^35720299987 is an apocalyptic number.

35720299987 is a deficient number, since it is larger than the sum of its proper divisors (346799133).

35720299987 is a wasteful number, since it uses less digits than its factorization.

35720299987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346799132.

The product of its (nonzero) digits is 17146080, while the sum is 61.

The spelling of 35720299987 in words is "thirty-five billion, seven hundred twenty million, two hundred ninety-nine thousand, nine hundred eighty-seven".