261553246511470 has 32 divisors (see below), whose sum is σ = 514570030338816. Its totient is φ = 95290746355200.

The previous prime is 261553246511437. The next prime is 261553246511533. The reversal of 261553246511470 is 74115642355162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24815293261 + ... + 24815303800.

It is an arithmetic number, because the mean of its divisors is an integer number (16080313448088).

Almost surely, 2^{261553246511470} is an apocalyptic number.

261553246511470 is a deficient number, since it is larger than the sum of its proper divisors (253016783827346).

261553246511470 is a wasteful number, since it uses less digits than its factorization.

261553246511470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49630597116.

The product of its (nonzero) digits is 6048000, while the sum is 52.

The spelling of 261553246511470 in words is "two hundred sixty-one trillion, five hundred fifty-three billion, two hundred forty-six million, five hundred eleven thousand, four hundred seventy".