1000155402487 has 8 divisors (see below), whose sum is σ = 1024643864160. Its totient is φ = 975671437440.

The previous prime is 1000155402457. The next prime is 1000155402509. The reversal of 1000155402487 is 7842045510001.

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

It is a cyclic number.

It is not a de Polignac number, because 1000155402487 - 2¹⁹ = 1000154878199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000155402457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671662 + ... + 1565707.

It is an arithmetic number, because the mean of its divisors is an integer number (128080483020).

Almost surely, 2^{1000155402487} is an apocalyptic number.

1000155402487 is a deficient number, since it is larger than the sum of its proper divisors (24488461673).

1000155402487 is a wasteful number, since it uses less digits than its factorization.

1000155402487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248313.

The product of its (nonzero) digits is 44800, while the sum is 37.

The spelling of 1000155402487 in words is "one trillion, one hundred fifty-five million, four hundred two thousand, four hundred eighty-seven".